XtCallCallbacks(3Xt)          X11 SDE 5.4R3.00          XtCallCallbacks(3Xt)


NAME
       XtCallCallbacks, XtHasCallbacks - process callbacks

SYNTAX
       void XtCallCallbacks(w, callbackname, calldata)
             Widget w;
             String callbackname;
             XtPointer calldata;

       typedef enum {XtCallbackNoList, XtCallbackHasNone, XtCallbackHasSome}
       XtCallbackStatus;

       XtCallbackStatus XtHasCallbacks(w, callbackname)
             Widget w;
             String callbackname;

ARGUMENTS
       callbackname
                 Specifies the callback list to be executed or checked.

       calldata Specifies a callback-list specific data value to pass to
                 each of the callback procedure in the list.

       w         Specifies the widget.

DESCRIPTION
       The XtCallCallbacks function calls each procedure that is registered
       in the specified widget's callback list.

       The XtHasCallbacks function first checks to see if the widget has a
       callback list identified by callback_name.  If the callback list does
       not exist, XtHasCallbacks returns XtCallbackNoList.  If the callback
       list exists but is empty, it returns XtCallbackHasNone.  If the
       callback list exists and has at least one callback registered, it
       returns XtCallbackHasSome.

SEE ALSO
       XtAddCallback(3Xt)
       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface

















Licensed material--property of copyright holder(s)                         1